DescriptionThe Drill-Tec™ Heavy Duty #14 Roofing Fastener is designed to secure insula-tion to heavy steel (18 ga.– 20 ga.) and wood decks. It is available in lengths from 1-1/4” –16”. The Drill-Tec™ Heavy Duty Roofing Fastener is Factory Mutual and Dade County approved.ApplicationThe Drill-Tec™ Heavy Duty #14 Roofing Fastener must penetrate the deck a minimum of 3/4”. Using a screwshooter, drive the fastener until the screw head is seated securely; with very rigid insulation boards, watch for the plate to dimple.